欢迎访问球探体育!

金超在Journal of Power Sources (IF 4.951 ,一区)上发表研究论文

来源:球探体育比分老版本 发布者:系统管理员发布时间:2015-03-05浏览次数:302

标    题:
Sulfur-Tolerant Redox-Reversible Anode Material for Direct Hydrocarbon Solid Oxide Fuel Cells
作    者:
Chenghao Yang, Zhibin Yang, Chao Jin, Guoliang Xiao, Fanglin Chen,* and Minfang Han*
论文摘要:

Li[Ni1/3Mn1/3Co1/3]O2 cathode laminate containing 8% PVDF and 7% acetylene black is fabricated and calendered to different porosities. Calendering effects on the physical and electrochemical properties of the Li[Ni1/3Mn1/3Co1/3]O2 cathode are investigated. It is found that mechanical properties of the composite laminate strongly depend on the electrode porosity whereas the electronic conductivity is not significantly affected by calendering. Electrochemical performances including the specific capacity, the first coulombic efficiency, cycling performance and rate capability for the cathode at different porosities are compared. An optimized porosity of around 30–40% is identified. Electrochemical impedance spectroscopy (EIS) studies illustrate that calendering improves the electronic conductivity between active
particles at relatively high porosities, but increases charge transfer resistance at electrode/electrolyte interface at relatively low porosities. An increase of activation energy of Li interfacial transfer for the electrode at 0% porosity indicates a relatively high barrier of activation at the electrode/electrolyte interface, which accounts for the poor rate capability of the electrode at extremely low porosity.

原文链接:
http://dx.doi.org/10.1016/j.jpowsour.2012.02.001